>> Is this behavior the specified behavior? Can I ASSUME it is true in
>> my code?
I imagine that Clojure's some?/every? follow Common Lisp's every and
some, defined as:
every returns false as soon as any invocation of predicate returns
false. If the end of a sequence is reached, every returns true. Thus,
every returns true if and only if every invocation of predicate
returns true.
some returns the first non-nil value which is returned by an
invocation of predicate. If the end of a sequence is reached without
any invocation of the predicate returning true, some returns false.
Thus, some returns true if and only if some invocation ofpredicate
returns true.
even? never returns false (because it's never called), and so every?
returns true when it reaches the end of the sequence.
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